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Time domain finite element analysis of structures with fractional viscoelastic damping using time-diffusive scheme

Deü, Jean-Francois and Rouleau, Lucie and Matignon, Denis Time domain finite element analysis of structures with fractional viscoelastic damping using time-diffusive scheme. (2017) In: 2nd Euro-Mediterranean Conference on Structural Dynamics and Vibroacoustics (MEDYNA 2017), 25 April 2017 - 27 April 2017 (Sevilla, Spain).

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Official URL: https://medyna2017.sciencesconf.org/data/Medyna_2017_Proceedings.pdf

Abstract

This work aims at simulating the time response of a structure damped by viscoelastic materials. The structure is discretised by finite elements and a 4-parameter fractional derivative model is used to describe the frequency-dependency of the mechanical properties of the viscoelastic material. The proposed approach combines a classical Newmark time-integration scheme to solve the semi-discretised equation of motion with a diffusive representation of fractional derivatives. This approach is applied to a finite element model, and validated on a single degree-of-freedom system for which an analytical solution can be derived.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-01814693
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Conservatoire National des Arts et Métiers - CNAM (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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Deposited By: Denis Matignon
Deposited On:13 Jun 2018 09:25

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